Const-ify RefCountedThreadSafe::AddRef and Release.

base/message_loop_proxy_impl_unittest.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_loop.h"
 #include "base/message_loop_proxy_impl.h"
 #include "base/scoped_ptr.h"
 #include "base/thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 
 class MessageLoopProxyImplTest : public testing::Test {
  public:
-  void Release() {
+  void Release() const {
     AssertOnIOThread();
     Quit();
   }
 
-  void Quit() {
+  void Quit() const {
     loop_.PostTask(FROM_HERE, new MessageLoop::QuitTask);
   }
 
-  void AssertOnIOThread() {
+  void AssertOnIOThread() const {
     ASSERT_TRUE(io_thread_->message_loop_proxy()->BelongsToCurrentThread());
   }
 
-  void AssertOnFileThread() {
+  void AssertOnFileThread() const {
     ASSERT_TRUE(file_thread_->message_loop_proxy()->BelongsToCurrentThread());
   }
 
  protected:
   virtual void SetUp() {
     io_thread_.reset(new base::Thread("MessageLoopProxyImplTest_IO"));
     file_thread_.reset(new base::Thread("MessageLoopProxyImplTest_File"));
     io_thread_->Start();
     file_thread_->Start();
   }
@@ skipping 33 matching lines @@
     }
 
    private:
     MessageLoopProxyImplTest* test_;
   };
 
   scoped_ptr<base::Thread> io_thread_;
   scoped_ptr<base::Thread> file_thread_;
 
  private:
-  MessageLoop loop_;
+  mutable MessageLoop loop_;
 };
 
 
 TEST_F(MessageLoopProxyImplTest, PostTask) {
   EXPECT_TRUE(file_thread_->message_loop_proxy()->PostTask(
       FROM_HERE, NewRunnableFunction(&BasicFunction, this)));
   MessageLoop::current()->Run();
 }
 
 TEST_F(MessageLoopProxyImplTest, Release) {
@@ skipping 30 matching lines @@
         new base::Thread("MessageLoopProxyImplTest_Dummy"));
     test_thread->Start();
     message_loop_proxy = test_thread->message_loop_proxy();
   }
   bool deleted = false;
   bool ret = message_loop_proxy->PostTask(FROM_HERE, new DummyTask(&deleted));
   EXPECT_FALSE(ret);
   EXPECT_TRUE(deleted);
 }